DOI: 10.1002/2016GL069583
论文题名: Measurement and imaging of infragravity waves in sea ice using InSAR
作者: Mahoney A.R. ; Dammann D.O. ; Johnson M.A. ; Eicken H. ; Meyer F.J.
刊名: Geophysical Research Letters
ISSN: 0094-9667
EISSN: 1944-9398
出版年: 2016
卷: 43, 期: 12 起始页码: 6383
结束页码: 6392
语种: 英语
英文关键词: InSAR
; landfast ice
; sea ice
; waves
Scopus关键词: Gravity waves
; Sea ice
; Synthetic aperture radar
; Water waves
; Wavefronts
; Waves
; Infra-gravity waves
; InSAR
; Interferometric synthetic aperture radars
; Land-fast
; Propagation paths
; Refraction of waves
; Shallow water waves
; Source location
; Ice
; baseline survey
; gravity wave
; measurement method
; sea ice
; shallow water
; synthetic aperture radar
; water depth
; waveform analysis
; Alaska
; Atlantic Ocean
; Atlantic Ocean (North)
; Barrow
; United States
英文摘要: Using short-temporal baseline interferometric synthetic aperture radar, we capture instantaneous images of a persistent field of infragravity waves propagating through sea ice near Barrow, Alaska, during January 2015. We estimate wave amplitudes to be between 1.2 and 1.8 mm. Curvature of wavefronts is consistent with refraction of waves entering shallow water from a source region north of Barrow. A shallow water wave model indicates that the geometry of the wavefronts is relatively insensitive to the source location, but other evidence suggests the waves may have originated in the North Atlantic, making this perhaps the longest observed propagation path for waves through ice. We also note that steepening of the waves entering shallow water can increase the peak strain by an order of magnitude, suggesting that infragravity waves may play a role in determining the location of the landfast ice edge with respect to water depth. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978180083&doi=10.1002%2f2016GL069583&partnerID=40&md5=99fc143c96446c94aa4c9befed90e4db
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10630
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, United States
Recommended Citation:
Mahoney A.R.,Dammann D.O.,Johnson M.A.,et al. Measurement and imaging of infragravity waves in sea ice using InSAR[J]. Geophysical Research Letters,2016-01-01,43(12).